PCSK9: From Nature's Loss to Patient's Gain

    January 2024 in “ Circulation
    Helen H. Hobbs, Jonathan C. Cohen, Jay D. Horton
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    Studysummary This commentary explores the role of PCSK9 as a target for drug development, underscoring that individuals with PCSK9 loss-of-function mutations experience significantly lowered LDL cholesterol levels and reduced coronary events, suggesting that full inactivation of PCSK9 is effective and safe.
    Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer
    The document discusses the impact of loss-of-function (LoF) mutations in the PCSK9 gene, which can lead to lower levels of low-density lipoprotein (LDL) cholesterol and significantly reduce the risk of major cardiovascular events, especially among Black individuals (2%). A study showed that individuals with these mutations had a 28% reduction in plasma LDL-C levels and an 88% reduction in major coronary events over 15 years. The document also highlights the development of anti-PCSK9 therapies, including a new antagonist, MK0616, which has shown promising results in clinical trials by significantly reducing plasma LDL-C levels. The safety and efficacy of PCSK9 inhibitors have been proven to be excellent, as predicted from human genetics.
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